Oil-burning device for furnaces



ug. 5, 1.930. J. N. MccoNNELL ET AL 1,772,426

OIL URNING DEVICE FOR FURNAGES Filed Oct. l, 192B bil/11111111 A f/Tg. 4.

Patented Aug. 5,` 1,930

CANADA OIL-BURNING DEVICE FOR FURNACS Application led October 1, 1928.` Serial No. 309,482. i

This invention relates to means for effect ing the combustion of crude oil, fuel oil and other hydrocarbon fuels in heating furnaces, such as those used for the generation of steam,

y the heating of air, water or other media, or

for any such purposes as require the economical production and control of heat. i

The object of the invention is to simplify the construction of oil burners by the provision'of a cheap, rapidly installed and easily Cleaned device comprising'a combination of oil and steam passages,and combining facility of application to locomotive and other types of furnaces with the practical advan-` .15 tages of low initial cost and easily maintained operating efficiency.

With these objects in view, the construction which we adopt consists in a body of rectangular section containing separate butcontiguous passages or chambers for the circulation of fuel oil and steam. At one end of the body is a specially shaped head, with one or more lateral openingstherein, which communicate with the fuel chamber while the 525 end of the head terminates in an opening 4 which communicates with the steam chamber.

. These openings arethreaded to receive pipe connections for the conveyance of fuel koil and steam as required. The other end of the body terminates in a Hat4 discharge plate upon which the mixture of yfuel oil and steam is ignited, and by which it is directed as required. y

The details of the inventionare more clearly described by the drawings herewith, forming part of this application, and in which Figure 1 is a longitudinal central section showing the general internal construction of the device. f Y

Figure 2 is a plan of the device.

Figure 3 is a cross section on the line 3-3 in Fig. 1. Y Figure 4 is a cross section on theline 4 -4 in Fig. `1. l In these drawings 5 represents the oil 1nlet, the fuel being conveyed to the device by the pipe 6, thence passing down the central opening 7 and along the passage 8, issuing through the port 9 onk mixing plate 10.

to the discharge and The steam V'inlet is shown at 11, the steam' passing into the device by the passages12n which encircle the walls of the central opens ing or oil chamber` 7,thence proceeding by the e passage 13 towards the discharge plate 10. i

The steam in the compartment 13 and thev yoil in the compartment 8 are thus separated 4only by the thin' flat surface 16, whereby an.k exchange of heat'between the steam and the fuel is rapidly and thoroughly eifected, thek oil being thus preheated before itarrives at the point 9 where it issues on to the discharge plate 101 and mixes with the steam.

Moreover the steam passage 13 is restrictv ed in areaat 17 in the neighborhood ofthe discharge plate, so that thevelocity of issue isv relatively high; and the steam jet issues `in a thin sheet the full width of the port 17, sweeping closely across the mouth 9 of the oil passage 8, and having an ejector effect upon the fuel issuing therefrom.

The result is a thorough and intimate mixture of steam and fuel upon the discharge plate 10 where ignition and combustion take place. l

The proportions of steam and fuel are reg-` ulated by valves in their respective supply pipes, which are so arranged as to be convenientlyoperated by the attendant. In the case of ya locomotive using this burner, for instance, the fuel and steam pipes are brought throughthe engine cab and the valve controls placed within reach of the fireman.

A passage 18 is arranged at the inlet end of the device approximately opposite to the inlet 45. This passage is closed by a plug 19 or may be used for the attachment of a sup-` porting standard for positioning the burner.

The openings 18 and 5 are interchangeable in function, andthe fuel may be introduced at 18 if more convenient, and the aperture v at 5 plugged, the fuel in either case. liewing down the passage 8, and issuing from the port 9 in a preheated condition to mix with the steam issuing from the port 17. p

Having now particularly described our invention, what we declare and desire to be pro# tected in by Letters Patent, is:

VA fuel oil burner comprising, a body member of elongated form and divided into two PATE NT FFICE JOSEPH N. McooNNELI. AND WILLIAM siviALL,.-or VANCOUVER, BRITISH ooImurcia;y

'I ,i Y 1,772,426

adjacent chambers for the reception and passage of steam and fuel oil respectively, a transverse aperture of rectangular cross section forming a nozzle for each said chamber, said nozzles being parallel in outline and to each other, a horizontal discharge plate adapted to operate as a deflector positioned in the front of said body member, said aperture y forming the steam nozzle being in the form ofa narrow vslot having one of its longitudinal edges coincident with the inner edge and with the upper Surface of said discharge plate and thereby adapted to discharge a sheetof high pressure steam along the upper surface of' said discharge plate, the said aperture forming' the fuel nozzle emerging at the surface of saliddischarge plate adjacent and in front of said steam nozzle slot- Whereby the vacuum ^condi-tion exerted on and near the ysurface 4 of sald discharge plate and immediately over the said fuel oil nozzle operates to induce the discharge vof the said oil and the steam acts toatomize and vaporize the same.

In testimony whereof We afliX our signatures.

JOSEPH N, MCCONNELL. WILLIAM SMALL. 

